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Grade N7M Nickel vs. Grade CW6MC Nickel

Both grade N7M nickel and grade CW6MC nickel are nickel alloys. Both are furnished in the heat treated (HT) condition. They have 74% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is grade CW6MC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 22
28
Fatigue Strength, MPa 190
210
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 85
79
Tensile Strength: Ultimate (UTS), MPa 590
540
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Maximum Temperature: Mechanical, °C 900
980
Melting Completion (Liquidus), °C 1650
1480
Melting Onset (Solidus), °C 1590
1430
Specific Heat Capacity, J/kg-K 390
440
Thermal Expansion, µm/m-K 9.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
80
Density, g/cm3 9.3
8.6
Embodied Carbon, kg CO2/kg material 16
14
Embodied Energy, MJ/kg 200
200
Embodied Water, L/kg 270
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 220
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 17
17
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.060
Chromium (Cr), % 0 to 1.0
20 to 23
Iron (Fe), % 0 to 3.0
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 30 to 33
8.0 to 10
Nickel (Ni), % 60.9 to 70
55.4 to 68.9
Niobium (Nb), % 0
3.2 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030